Tunnels Beach

Other Names for This Beach

Dive beneath the surface at Mākua Beach and you will understand the nickname instantly. The nearshore reef is honeycombed with lava tube formations — actual underwater tunnels carved by ancient volcanic activity. These passages create an intricate maze that snorkelers can peer into and experienced scuba divers can explore.

The Hawaiian name, Mākua, means "parents" or "elders." The beach sits in the Haʻena area on Kauaʻi's lush north shore, where mountains rise steeply from the coast and waterfalls cascade down emerald cliffs after rain.

For water quality purposes, DOH monitors this area under Haʻena or Mākua. Searching for "Tunnels Beach" in official databases will not return results.

During calm summer conditions, Tunnels has generally good water quality with excellent visibility. The extensive reef creates a partially protected swimming area. However, the north shore of Kauaʻi receives significant rainfall, and streams in the Haʻena area can carry runoff into the ocean after storms.

Winter conditions (October through April) bring powerful swells that can make Tunnels Beach extremely dangerous. Large waves break over the shallow reef, creating strong currents and surge. Many rescues occur here each year when visitors underestimate winter conditions.

Haʻena State Park requires advance reservations for entry. Plan ahead, especially during summer when demand is highest.